Juice strainer



M. E. CARTER JUICE STRAINER Filed Oct. 26. 1929 3 Sheets-Sheet 1 March 29, 1932.

March 29, 1932. M. E. CARTER 1,851,809

JUICE STRAINER Filed Oct. 26. `1929 3 Sheets-Sheet 2 M. E. CARTER 1,851,809

JUICE STRAINER Filed Oct. 26, 1929 3 Sheets-Sheet 3 Patented Mar. 29, 1932 UNITED srA'rss MARTIN E. CARTER; or LA ROMANA, DoisLrINICAN,nntrianro JUICE `s'rRAINnR c Y Application led- October 26, 1929. Serial No. 402,'46.

This invention relates tofliqui'd strainers andimore particularlyy to an apparatus especially adapted for use in strainingcane juices for usein sugar making with a view to sep- .ar-ating therefrom trash or cane fibre con-A tained in the liquid as removed from` the crushing rolls.` 1

An importantobject of the invention-is ythe improvement of an apparatus disclosed in my '1o prior UnitedV States Patent, No. 1,594,999 granted August 3, 1926, for juice strainer, to increase the eiiciency'thereof inthe straining operation. j

-A further and more specific object kofthe invention is the provision of a construction lpreventing splashing ofvdirty liquid ,into the liquid which has been treated by the screening apparatus.

A further objectv of the invention is the pro'- vision of kan improved inletl for such screening devicesy whereby the incomingfliquid is more' evenly distributed along thescreen and pilin upy of the liquid at one end thereof avoi ed.

A still further obj ect of the invention is the provision of an inlet or supply pipe khaving auxiliary supply' pipes associated therewith and disposed within `the l screening apparatus which are so arranged that the extent' to which the liquid is distributedfover thersur-` face of the screen. is increased. v A still further object ofthe invention is'to provide a construction permitting the use' of L, a closedT tank' for the screening apparatus.y A further` objectof the inventionis the provisionfof' an improved screen structure both in the general make-upthereofand in the rmanner of mounting 'the' saine" upon'- the support-v m ingendcastings.'

These and other objects VI attainby the construction shown in the accompanying drawings wherein,- forthe'purpose of' illustration,-I have shown a preferred embodiment of-myinvention and 'wherein z Fig. 1 is a side elevation' taken' on'the line' 1-"1 of Fig. 2 ;V l

Fig.2 is a transversefsectionalview through the juice straining apparatus Figp is an' end view showing driving' mechanism j Fig. 4 'is a -vie'w'fof one'of thefsc're'en'segl ments ;1and j Fig; 5 is an enlargedfragmentaryview of the screen inse'cti'on showingthefconstruction of the" screen;y l

Referring now' more particularly to the drawings', lthe"nunie'ral 10 generally idesg nates a substanti allyl semi-'cylindrical'trough, the upper edges 'of which 'are provided with int'urne'd flanges' or"should'e`rs 11./ A semicylindricaltop 12 is provided fortheitfrougli which is' hinged tothe 'shouldersy 11 at points spaced inwardly from' the edges of the trough as atf13 and whichisformed in two sections joining at their' top" as at 14,which may be separated and swung down at opposite sides;Y ofthe t'ankfto permit accessfto the yscr'eening apparatus hereinafter to? bei-described.'v heads '15 are provided closing the endso'fthe` trough and of 'the'f semi-cylindrical'cover12 thereof.'

The' screening apparatus comprises rend castings 16v each includinga roller track 17 havingassociated?therewith a gear 18 formed at one edge of thev track-Lv Projecting inwardly froml the roller track'is a cylindricaln flange 19 the p'erip'heryo'f Whiclii's notchedat spaced intervals as indicated at 2O vto provide seats for longitudinallyextending, lreinforcing and spacingribs`21- preferably in T form and consistingeither of solidbeam'or an asi sembly ofbea'ms *j Projecting' inwardly from-the roller track 17 is a flange 22 formingf a splashv guard( Journaled in the end heads lofare shafts 23, 23-a upon whicharefmountedcombined roller and gear elements 24for`co`action withn roller track 17 andy their associated vgears 18. Y These shafts are disposed adj a cent thebottom of the troughs and the elements 24C serve both to support the screen frame and as a driving means therefor, shaft 23 being projected at one end of the trough and associated with a drive generally designated at 25.

Segmental screens 26 have their ends supported by the flanges 19 and their side edges supported by the ribs 2l being bolted or othersubstantially V-shaped trough 30 which is disposed adjacent the top of the casing and within the conlines of the screen, the bottom of this trough being free from perforations within the casing but exteriorly ofthe casing being provided with a discharge canal 31. The outer end of this section of the trough is formed with an outboard bearing 32 for a shaft 33 the opposite end of which is jour naled in the remote end head of the casing. This shaft is driven from an extension of one of shafts 23 and Within the casing is equipped with a worm 35 for shifting material den posited in the trough longitudinally7 to the dis charge canal 3l and to the exposedend of the trough from which it may be removed. The casing above the trough and exteriorly to the screen has extending longitudinaly thereof a spray pipe 36 for directing a spray against that portion of the screen which ispassing over the trough to drive adhering matter therefrom into the trough. If hot water or steam is employed a sterilization results as set forth in my prior patent hereinbefore noted. l i

Likewise extending longitudinally'of th casing and supported at its ends therefrom is an inlet or distributing pipe 37 the opposite ends of which are open and adapted for communication with feed pipes 38. Distributing pipe 37 is eccentrically disposed with relation to the screen and at the approximate level of the axis thereof and has extending therefrom a plurality of radially directed pipes 39 the end portions of which are ar ranged in close proximity to the adjacent portions of the screen.

Clamped to the distributing pipe 37, as at 4:0, are substantially semi-circular baffles or auxiliary splash guards 4:1. These baffles are disposed immediately inwardly of annular flanges 22 and elfectually cut off any splash which might occur in the lower half of the casing, thus eliminating a tendency of dirty liquids within the screen to mingle with those lying exteriorly thereof.

In operation of the strainer, assuming the apparatus to be driven, the'luid to be strained is admitted simultaneously through pipes 38. This results in an equalization of pressures within the main distributing pipe 37 so that the discharge of the fluid is substantially uniform throughout the Y length of the casing. The auxiliary distrib uting pipes 39 insure delivery of this fluid directly against the screen and at a time immediately after this screen has passed by the spray pipe to drive any material adhering 7 thereto into the trough 30. Foreign matter which cannot pass through the screen will be carried by the screen until it overlies the trough and will be removed therefrom by the spray pipe and deposited in the trough. Due 8 to the fact that this trough has no perforations within the straining zone, line foreign matter which would otherwise have a tend- -ency to collect in the straining zone is carried to the exterior of the machine Where it 8 may be settled out before the fluid is again subjected to a straining action'. Collected trash in thel exposed endof the trough may be removed from time to time as this is found necessary. Due to the sectional formation of 9 the casing cover and to the formation of the screens in removable sections, repairs may be readily made at any time when they become necessary.

The construction being capable of a c0n- 9 siderable range of change and modification without in any manner departing from' the spirit of my invention, I do not wish to be understood as limiting myself to the particular structure herein illustrated except as l hereinafter claimed.

I claim: Y

1. In strainingapparatus,arotatingscreen, a supply pipe extending into said screen and having outlets directed against the screen and means for simultaneously delivering fluid to be strained to opposite ends of said supply pipe, the outlets of said supply pipe comprising longitudinally distributed radially directed auxiliary pipes having their outlet ends in close proximity to the screen, said pipes being disposed in a plurality of rows, the pipes of each row being staggered with relation to those of "adjacent rows whereby the fluid is substantially uniformly distributed along the length of the screens.V

2. In a strainer and in combination, a tank,

a solid-bottomed trough extending through said tank, a conveyor for moving material longitudinally from the trough, a substantially cylindrical screen surrounding the trough, means for rotating Vsaid screen, a supply pipe for delivering dirty liquid to the interior of the screen and baflle plates supn ported by said supply pipe for preventing splashing of the dirty liquids through the ends of the screen. i

3. A 'strainer and in combination, a rotatable screen including annular end elements each provided with an inwardly-directed flange7 a supply pipe extending through the screen for delivering fluid to the interior of the screen and baffles carried by said supply pipe and disposed inwardly of the ianges of the end members.

4. A strainer and in combination, a rotatable screen including annular end elements each provided With an inwardly-directed ange, a supply pipe extending through the 10 screen for delivering fluid to the interior of the screen, baffles carried by said supply pipe and disposed inwardly of the flanges of the end members, and means for simultaneously delivering Huid to be strained to opposite l5 ends of the supply pipe.

MARTIN E. CARTER.

'Ill 

